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<!DOCTYPE html>
<html>
<body>
​
Enter your name: <input type="text" name="fname" id="fname" onblur="myFunction()">
​
<p>When you leave the input field, a function is triggered which transforms the input text to upper case.</p>
​
<script>
function myFunction() {
  var x = document.getElementById("fname");
  x.value = x.value.toUpperCase();
}
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/tags/tryit.asp?filename=tryhtml5_ev_onblur by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 03:09:26 GMT -->
</html>
​
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